Fix for breakage of C-coded SRFs, from Joe Conway.

src/test/regress/expected/rangefuncs.out

@@ -1,3 +1,15 @@
+SELECT * FROM pg_settings WHERE name LIKE 'enable%';
+       name       | setting 
+------------------+---------
+ enable_hashjoin  | on
+ enable_indexscan | on
+ enable_mergejoin | on
+ enable_nestloop  | on
+ enable_seqscan   | on
+ enable_sort      | on
+ enable_tidscan   | on
+(7 rows)
+
 CREATE TABLE foo2(fooid int, f2 int);
 INSERT INTO foo2 VALUES(1, 11);
 INSERT INTO foo2 VALUES(2, 22);

src/test/regress/sql/rangefuncs.sql

@@ -1,3 +1,5 @@
+SELECT * FROM pg_settings WHERE name LIKE 'enable%';
+
 CREATE TABLE foo2(fooid int, f2 int);
 INSERT INTO foo2 VALUES(1, 11);
 INSERT INTO foo2 VALUES(2, 22);